Prevent direct execution of intentURLs with confirmation dialog

app/src/main/kotlin/com/github/gotify/messages/IntentUrlDialogActivity.kt

@@ -0,0 +1,33 @@
+package com.github.gotify.messages
+
+import android.content.Intent
+import android.net.Uri
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import com.github.gotify.databinding.ActivityDialogIntentUrlBinding
+
+internal class IntentUrlDialogActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setFinishOnTouchOutside(false)
+        val binding = ActivityDialogIntentUrlBinding.inflate(layoutInflater)
+        val intentUrl = intent.getStringExtra(EXTRA_KEY_URL)
+        assert(intentUrl != null) { "intentUrl may not be empty" }
+
+        binding.urlView.text = intentUrl
+        binding.openButton.setOnClickListener {
+            finish()
+            Intent(Intent.ACTION_VIEW).apply {
+                data = Uri.parse(intentUrl)
+                flags = Intent.FLAG_ACTIVITY_NEW_TASK
+                startActivity(this)
+            }
+        }
+        binding.cancelButton.setOnClickListener { finish() }
+        setContentView(binding.root)
+    }
+
+    companion object {
+        const val EXTRA_KEY_URL = "url"
+    }
+}

app/src/main/kotlin/com/github/gotify/service/WebSocketService.kt

@@ -31,6 +31,7 @@ import com.github.gotify.client.model.Message
 import com.github.gotify.log.Log
 import com.github.gotify.log.UncaughtExceptionHandler
 import com.github.gotify.messages.Extras
+import com.github.gotify.messages.IntentUrlDialogActivity
 import com.github.gotify.messages.MessagesActivity
 import com.github.gotify.picasso.PicassoHandler
 import io.noties.markwon.Markwon
@@ -320,9 +321,10 @@ internal class WebSocketService : Service() {
         )
 
         if (intentUrl != null) {
-            intent = Intent(Intent.ACTION_VIEW)
-            intent.data = Uri.parse(intentUrl)
-            intent.flags = Intent.FLAG_ACTIVITY_NEW_TASK
+            intent = Intent(this, IntentUrlDialogActivity::class.java).apply {
+                putExtra(IntentUrlDialogActivity.EXTRA_KEY_URL, intentUrl)
+                flags = Intent.FLAG_ACTIVITY_NEW_TASK
+            }
             startActivity(intent)
         }